a super computer
the fastest commercial train presently running in the world
a Japanese spy satellite
a high speed car
Answer is Right!
Answer is Wrong!
The correct answer is (b). Maglev is the fastest commercial train presently running in the world. It is a type of train that uses magnetic levitation to float above the track, which allows it to travel at very high speeds. The current record for the fastest maglev train is 603 km/h (374 mph), set in 2015 by a Chinese maglev train.
(a) is incorrect because a super computer is a very powerful computer that is used for scientific and engineering calculations.
(c) is incorrect because a Japanese spy satellite is a satellite that is used by the Japanese government for intelligence gathering.
(d) is incorrect because a high speed car is a car that can travel at very high speeds.